As of now, there is no official confirmation from PlayStation or Sony that PlayStation 5 cross-buy functionality—allowing players to purchase a game on one PlayStation platform (like PS5) and access it on another (such as PS4 or potentially PC)—is coming. However, rumors and speculation have circulated, particularly around the idea of unifying game purchases across platforms, including the possibility of PS5 and PC integration.
That said, cross-buy between PS5 and PC is not currently supported, and Sony has historically maintained a closed ecosystem. While PlayStation Plus and PlayStation Game Catalog allow access to a library of games across PS4 and PS5 (depending on the game), true cross-buy—where buying a game on one platform grants access on another—does not exist.
There has been some indirect speculation (e.g., from gaming news outlets and forums) that Sony may explore broader purchase unification in the future, possibly to compete with platforms like Xbox, which offers cross-buy between Xbox Series X|S and Xbox One (and now Xbox Game Pass on PC). However, no official hints from Sony have confirmed plans to allow PS5 purchases to unlock the same game on PC, especially not in the near term.
In short:
✅ PS5 and PS4 share some backward compatibility and cross-gen access.
❌ No confirmed cross-buy between PS5 and PC.
❓ Rumors exist, but no evidence suggests Sony is actively planning to unify PS5 and PC purchases.
Stay tuned for official announcements—Sony has not signaled any moves toward PS5-to-PC cross-buy at this time.